Automatic discharge and water control for concrete pavers



G. E. BLOOD June 1'1, 1935.

AUTOMATIC DISCHARGE AND WATER CONTROL FOR CONCRETE PAVERS Filed Sept. 3,1931 7 Sheets-Sheet 1 June ll, 1935. G. E. BLOOD 2,004,234

AUTOMATIC DISCHARGE AND WATER CONTROL FOR CONCRETE PAVERS Filed sept. 5,1951 7 sheets-sheet' 2 June 11, 1935. G. E. BLOOD 2,004,234

AUTOMATIC DISCHARGE AND WATER CONTROL FOR CONCRETE PAVERS Filed sept. 5,1931 7 shets-sheet 5 S11/vento@ June 1l, 1935. G, E, BLQOD Y 2,004,234

AUTOMATIC DISCHARGE AND WATER CONTROL FOR CONCRETE PAVERS Filed Sept. 3,1931 7 Sheets-Sheet 4 June 11, 1935. A G, VE BLOOD C 2,004,234

AUTOMATIC DISCHARGE AND WATER CONTROL FOR CONCRETE PAVERS Filed Sept. 3,1931 7 Sheets-Sheet 5 June 1l, 1935. G, E, BLQQD 42,004,234

AUTOMATIC DIISGI'IARCrE AND WATER CONTROL FOR CONCRETE PAVERS Filedsept. 3, 1951 v 7 Sheetsheet e gn/vento@ G. E. BLOOD 2,004,234

AUTOMATIC DISCHARGE AND WATER CONTROL FOR CONCRETE PAVERS June 11, 1935.

Filed Sept. 3, 1951 7 Sheets-Sheet 7 m m, H W 0 m l@ o w o o O n E A w M6 mu, wm. x 3 I wm. md QS o o \\\\\Qm. wm um. o im@ Patented June 11,1935 UNITED STATES PATENTv OFFICE ATOMATIC DISCHARGE AND WATER CON- TROLFOR CONCRETE PAVERS George E. Blood, Numa, N. Y., assigner to TheV FooteCompany, Inc., Nunda, N. Y., a corporation of Delaware 20 Claims.

control mechanism for concrete pavers, and has for `an object to providepositivecontrolmechanismrwhereby, when the` operator moves the handlefor the operation of the skip hoist. the` automatic controlmechanismwill be started, soV that the power operated discharge will beset into operation to release'the batch that has been previously-placedin the drum. .Thera after a timed interval, the power` operated.discharge will automaticallyl close, Furthermore,` the inlet or`replenishing vvalve for the water tank on the paver will` be cut off`and the tankV contents willV be emptied into the drum of the paver,` sothat "the aggregates may-be properly'mixed for the delivery of the mixedbatch, this occurring just as the aggregates-leave thel skip andenterthe drum of the paver. Y j

. Still'another object of the invention is to provide an automaticmechanism whereby, after the batch meter bell rings and the powerdischarge mechanism 4is'automaticallyy unlocked ,by the batch meter, theoperator onv starting the skip in its upward travel, will alsohaveset'into'motion the, automatic l, 4control mechanism, so that `thepower operated discharge will automatically openl to discharge a batchinto the bucket, and, after` a pre-determined time, sav` seven seconds,will automaticallyclosev without further manual operation by theoperator, the requisite amount of water having also been fed into, thedrum, and automatically, outv oli` after a' pre-determined time. i

After the skip is lowered and again started on its upward movement, thecycle will be again started. 'i

- `Still another object of the invention is to provide `an automaticdischarge mechanism and water control whereby these operations will beautomatic with the manual control of the skip hoist; that is, when theskip is started onits upward journey, the timing control will be set inoperation and the cycle completed. i l

Still another object ot the invention is to pro vide a Adevicewherebythe vautomatic discharge mechanism is assumed to be closed, andthe cyclestarted when the skiphas `started its upward journey, but,;if'thedischarge is` open when the automatic mechanismis thrown into operationthe cycle will operate just `the Vsamewith the exception that thedischarge,` will stay open until closed by a closingcam, after which thecycle of operations will take place in their regular order.

Still another object of the invention -is to apply the automaticmechanism about lto be-described to the well known form of planetary`discharge `used on all of the yFoote pavers, which planetarydischarge isshown and described' in thev patent granted to `Charles E. Foote onNovember` 10,` 1925, and numbered 1,561,144.

In the patent mentioned, the planetary mecha.- nism `for operating thedischarge chute is located on one side ofthe machine, whereas in thepresent instance the planetary mechanism is locateddirectly over .thedischarge chute.l s z It will be understood that when the Wordspowerdischarge-orpower operated discharge,?-are used, they referto a chutethat ts in the drum of the paver thatis to be partly revolved to an openor discharging position for the drum; and revolved to a closed or anon-discharging position, the revolving being d one by aplanetary'm'echanism as shown in the above referred to patent; n y YStill another object of the invention is to provide an automatic controlmechanism for operating the water discharge.- In the'present in; stancethis automatic mechanism is shown for controlling the form `of watermeasuring tank, asshown in a pending application, led by me on May 17,1930, ,and `bearing Serial `Number 453,282 and which .has matured intoPatent 1,879,051, `SeptemberZ'l, 1932. In that appli- .cation the watertank is manually operated jto open and close the Water supply, Whereasin the present case, this is automatically controlled, but still maybemanually controlledlif desired.

Still another `object `of the invention Vis to provide an automaticpower-operated discharge and water controlA mechanism `that may.y bequickly and readily applied to the `well-known formfof Foote paver, withits 4equally as well l known `form of` planetary power discharge, andits measuring ,water `supply tank.

Still another object of the inventionisto pro,- vide anv automaticvdischarge and water control, wherein l.the interval of time for theremaining open' of `the discharge may be regulated for, say, eitherseven, nine'or eleven seconds, as a batch from `the drum can be easilydischarged into the bucket inrthesefew seconds. Also, the releasing 'ofthe Water from the tank may be properly timed with relation to theemptying of the skip intothe drum, and this is generally done just .asthe aggregates leave the skip and enter the drum. Again, the timing ofthe dis-V charge `of the water from the tanknto the drum may also beregulated. V i Y Still `another `object of the invention is to closedand the discharge valve being open.

provide an automatic controlling mechanism for opening and closing thepower discharge and for operating the Valves of the water tank, whichmechanism is easily adjustable and may be readily and quickly applied tothe Foote paver with but slight changes; the automatic mechanism in noway interfering with the ordinary tary part of the frame of a concretepaver with my improved automatic discharge and water control mechanismas attached thereto, the automatic timing mechanism about to start itscycle, the power operated-planetarydischarge f'or the drum, however,having been just operated as if the cam i3 were in its dotted lineposition.

FigZgis a face view thereof. v f n Fig. 3 is a fragmentary view of apart of the power operated discharge mechanism shown as connected to thedischarge chute, its 'operating parts being in their closed ornon-discharging position (the timing mechanism would be in its full lineposition, as vshown inFig. 1), some of the parts being omitted for thevsake of clearness of illustration.' l

Fig. Llis a detailed sectional View, taken on line 4-4 of Fig. 2,showing the conjoint means for starting and operating the timing shaftand for controlling thel operation of the skip hoist. Fig. 5 is agfaceview of the same. Fig. Gis a plan view of the same.

Fig. 7 is an enlarged detailed sectional View,V taken on line 1 1 ofFig. 2, showing the manual and automatic means foroperating andresetting the power operated planetary Vdischarge mechamsm. Y Y

' Fig. 8 is a sectional'plan'view of the same, taken Online 8--8 ofFig`.7. Y

Fig. 9 is an inverted view of the roller carrying member shown'in Figs.7 and 8.

,Fig 10 is an enlarged detailed sectional view, taken on line ID-l ofFig. 2, showing the water control mechanism cams.

Fig.v 11 is aface View of the same.

fFig. 12 isa top'plan View of the same. Y Fig. `13 isadetailed viewofthe water control lever. Y

' Fig.,14 is a side elevation of the water measuring tank, thereplenishing valve being shown open and the discharge valve being shownclosed.

Fig. 15 is a detailed view of the discharge and replenishing valves, thereplenish valve being I General description Referring now morespecifically to the several views-there is shown in Fig. 1 the severalparts of the paver frame A, and although I have not illustrated thecomplete paver. the parts necessary and drive this shaft.

far an understanding of the present invention are set forth.

The attachment about to be described is to be used in conjunction withthe automatic controls,

as shown in the patent granted to Fred L. Dake,

patented November 4, 1930, and bearing Patent Number 1,780,869. v v

In that patent, there is shown a shaft, which is caused to continuouslyoscillate, means also being Vbeing manually operated.

The control mechanism about to be described utilizes this form ofmechanically operating the skip hoist handle, as well as having itcapable of manual operation.

`It will also be understood that in the present application, I have onlyshown as much of the paver as is thought necessary to illustrate thepresent invention, and to show the cooperation of their several parts. n

The form of planetary power-operated dischargemechanismv isV shown rinthe patent to Charles'E. Foote, Number 1,561,144, heretofore mentioned;and inthe present instance this form of planetary operating mechanism isconnected to the chute in the same manner, except that the planetariesare located directly overthe chute, rather than toone side thereof.

ATo a part of the paver'frame A, there is shown bolted the two bracketsA', which in turnsupport the oscillating shaft b on the end of which isthe crank b', which in turn is connected by Ythe pitman rod D, whichlatter is connected as at D' to the driving` gear D. This gear isrotated at all times by the pinion P mounted on a power shaft P. Thus,it will be seen that theshaft b is oscillating at all times that thepowershaft is revolving. 'Y

I have notshown the means for driving the power shaft P', but it will beunderstood that `the engine for the paver will be connected with Thisoscillating shaft Vb with its various con.- nections to the controllevers is fully illustrated in Patent Number 1,780,869 above mentioned,and grantedvto Fred L. Dake. f Y

Nowj rigidly mounted Von the oscillating shaft b is a notched member" N,so that the small handle I mounted'on the skip hoist'controlrlever 3 maybe lhooked into the notched member when it is desired to mechanicallyoperatethe handle 3 through the oscillation of the shaft bl.

As will'be noticed, the skip hoist control lever 3 is freely mounted onthe shaft b and is provided at its lower end with the stub arm 4, towhich in turn is Yfastened the bifurcated end 6 of the skip hoistcontrol rod 5. n

I have not shownthe skip nor skip hoist on which the skip cableViswound, but it will be understood that when the lever 3 is pulledoutwardly, either by hand or by dropping the handle i into the notchedmember N, the skip hoist rod 5 will be in turn liftedupwardly, whichwill cause the hoist l(not shown) to elevate the skip.

Thus it will beseen that the skip hoist lever 3 may be pulled to operatethe skip rod 5, or the small handle l may be preferably operated so thatthe oscillating of the shaft b, the notched member N engaging with thehandle l thereon, will transmit the movement of the `oscillating 'shaftb to pull the skip hoist control rod to in turn elevate'theV skip.

Now itis desirable to automatically controlthe flow'offwater. from ameasuring tankshortly to be described, andto automatically controlthepower discharge `mechanism and theparts 4about to be described providethis automatic conti-01.

That is, when thecontrol` of the skip hoist `is actuated to thus startthe .skip` in its upward` starting and operation of` timing: shaft IVautomatically accomplish thisby setting into .operation a timing shaft,which isset in motion'v by the initial operation vof the skip hoistcontrol lever, after which the movement of the timing mechanism and itscontrol parts is continuous for a complete cycle of operation.

At the outerendofthe heretofore mentioned 1 brackets A?, there issupported themain timing shaftB, on which is mounted the ratchet 9,which ratchet is preferably `provided with seventeen teeth, sothat itwill be moved in a step-by-step movement seventeen times forV onecomplete revolution. i. z Now on this timing shaft B, there is alsolocated an opening cam for the power discharge, a closing cam for thesame and a cam for regulating the water supply, Aall of which willbeshortly described. Y, v

As will be seen in Figs. 1, 4, and, there is provided means for startingthe movement of the timing shaft B, which occurs when the 'skip controlhoist lever 3 is operated to start theaskip in its upward movement. v iv The mechanism for starting the movement of the timing shaft VB isperformed through an arm "l, which is loosely mounted at its one `end onthe shaft B and slottedly connected `by thepin 'l' to the bifurcated end6 of the skip hoist (.:ontrol'` rod 5. v Y

On this arm 'i thereis the starter pawl l8,1Which is pressed bythelspring 8', which pawl normally is held-directly `under one of theteeth in the ratchet wheel 9. `From `the rearend of the starter pawl 8extendsn 'the lever 3|, which ,extends through the outer slotted shield3|'. This lever is provided with a small notch 3| thatmay be hookedwithin the shield, if it is desired to keep the pawl 8 out of engagementwith` the ratchet Wheel. Now when this lever 3l is operated to disengagethe pawl from the ratchet wheel, the entire automatic mechanism isthrown out of operation, which will be explained as the specificationproceeds. i

It will be seen as far as described, that when the skip `hoist controlrod 5 is thus initially operated from the movement of the handle 3' tostart the skip in lits upward movement, thestarter pawl 8 will move theratchet wheel 9 upwardly one tooth, so that `the driving pawl about tobe described will'engage the driving teeth to continue `the driving ofthe ratchetwheelS to thus step-by-step revolve the timing shaft B, whichoperates `the various timing cams about to be-described.

n win be remembered that thev haadie. a4 is'` loosely mounted on theshaft b, but that the notched member N is pinned thereto, and itiwillalso' beV remembered that when theskipI hoist `handle `3 is operated, itmoves the arm Itovin turn move-theA ratchetwheel 8 one tooth. f Now `tocause the step-by-step movement of this ratchet wheel 9, I have providedthe driving pawl. l0, which in turn is pivotally mounted vin the slottedcollarjl', as may be seen in Figs. 4 and 5.?

It is tobe noticed .that the ratchet wheel 4i9 has the one blank` space9 on its periphery, on which normally rests the end or the pawl I0,sothat until thearm l is raised toin turn forceth ratchet wheel 9Vupwardly onenotch to the adjacent 'tooth Sv, `the pawl I0? willcontinueV1 to i vsimply ride `onthisV blank on the ratchetwheel, and notmovethe ratchet wheel 9. However, when the skipV hoist handle 3 ismoved, either manually or by locking the handle I onthe notchmember, theraising/of the armv 'l withits pawl `8 will move thehratchet wheelupwardly one tooth, so that now the pawl Ill` will Vengage the tooth 9,that is, the tooth. justvbelow" the blank, `while the continuedoscillation? of lthe shaft .bandits pawl Ill will move the ratchet wheelaround seventeen'times in a step-by-step movement until the' pawl I0will againlcomeito rest oppositethe blank 9' `on the ratchet wheel',Where it willrernain` until the skip` hoist handle 3 is again operated,to in turn raise thevarm 1' and let ,the starter pawl 8 again startthe'fautomatic cycle by placing a toothin position forthc pawl I0."

Adjacent the collar and loosely monntedionthe shaft b is theover-hanging arm l from which extends the locking pawl I I to engage theratchet teeth ofthe ratchet wheel 9 toiprevent any rearward movement orback lash in the said ratchet; i Thus it will be seen that on yaninitial movement ofthe skip hoist control lever, the automatic `Hthinwhich barrel is the spring 122, the barrel inturn being mounted in thesmall lug' |23 on the outer'endfof one offthebrackets A. As the ratchetWheel is moved one` notch at a time, the little `plunger or lug I2l willcenter in one `of' the small circular cavities IZ, to thus prevent anyforward slip inthe ratchet wheel, due to any vibration orl jar of thepaver orits parts.

` Itwi1lbe understood thatthis' arrangement centersfthe ratchet wheeland lets it movefor--fY wardlyin its regular step-by-step movementybuton the other hand prevents any` forward 'slip which, if it occurred,vwould `throw out the timing arrangement of thefvarious cams, aboutto bedescribed. 7 Y l f i At` this` point, the -skip (not shown)` will 4betravelling in its upward direction toldischarge the aggregatesintothedrum of the paver'(not `shown)` and the timing step-by-stepmotion.

V'Havingfdescribed how the skip control leve is operated toelevatetheskip, and'having ex-V plained how the `timing shaft is set intooperation .by its 'starter pawl on the operation of `the arxn'fcarryingythe starter paw1`;and having'ex'-y shaft B will be in itsv plained howthe timing shaft is rotated in a step-by-step movementJ to make onecomplete revolution, the means controlled by this timing shaft foropening and closing the .power discharge will now be explained. w

Automatic opening and closing cams of the power discharge Referring forthe moment to Figs. 1, 2 and '7, it will be noticed that there ismounted on the timing shaft B the discharge cam I3, which is keyed tothe shaft B, which will be hereinafter called the opening cam, as itoperates the parts that cause the chute (planetary discharge) to open,so that 'the material in the drum may be discharged It will be noticedthat the cam` is positioned directly over the arm I4', being a part ofthe lever I4, which is the lever for controlling the power-operatedplanetary discharge control mechanism I8, whose operation will beshortly mentioned.

Also mounted on the timing shaft B is the fur-` ther adjustable cam 21,which will hereinafter be termed the closing cam, as this is the camthat causes the parts of the planetary discharge to operate to close thechute, so that the aggregates will be held in the drum for mixing Itwill be noticed that theclosing cam isadljustably mounted on Ythe shaftB, butv is adjacent to aplatefZl that is xedly mounted on the "shaft,the plate being provided with three holes so that a pin 21 may lock thecam to the plate in any one. of three positions.`

In other words, the cam 21 may be adjusted slightly forwardly orrearwardly of the position `shown in'Fig. 1, so that after the powerdischarge is opened by the operation of the cam I3, the closing cam 27may be regulated to again close the ysame at, say, an interval of seven,nine or eleven seconds, depending on whether the cam is advanced orretracted from the position shown in Fig. 1.

Planetary power discharge and control parts op- .created bythe openingcmd closing cams Having described the opening and closing cams, theparts that these cams operate will now be set forth. f

YAs heretofore mentioned, these cams I3 and 2T are located directlyabove the arm I 4', which is a part of the discharge control lever I4,which lever is mountedV in a small bracket on the vstub shaft C. Furtherkeyedto the stub shaft C is the Varm I 6, to the upper end of which inturn is' connected the rod E to whichis secured the small plate I1,which` carries the roller I1;

This roller is adaptedto engage a casing I 8' of the planetary dischargemechanism I8, and it is to be understood that when the roller is in-adepression I8, the eccentric, which is a part of the planetarymechanism, is held from movement, but when the roller I'I is pulledwithout one of the notches, the eccentric of the power discharge isoperated, and the discharge chute connected to the eccentric will beopened or closed on each 180 degrees travel of the eccentric and' casingI8.

Briefly, the planetary Vdischarge mechanism consists of the casing I8',with its diametrically opposite depressions I8, while connectedtherewith is the eccentric I9, from which in turn extends the rod 20.The `lower end of the rod 20 is Vitwill be understood that the dischargechute is in its open position. This position is also shown in Fig. 3 indotted lines. When the eccentric is in its lowermost position, as shownin full lines in Fig. 3,l the chute has revolved to its closed lposition, vso that the aggregates cannot pass out the chute from thedrum (not shown).

Thus, -if the discharge control handle I4 is pulled towards theoperator, shaft C in turn will be partly rotated, and throughY the armI6, and

rod E, the roller I I will be pulled from the casing` I8', and theeccentric .travel through-up or down to open or close the dischargechute, depending upon whether the leccentricwas in its upper orlowermost position, before the handle is operated.

I have not shown the Ybrake. band or the arrangement Vof the planetarygears or the means for driving the same in thisapplication, but they areall clearly shown in the 'above mentioned patent to Charles E. Foote. l

The normal position of the discharge control handle I4 is shown in Fig.1, and it will be understood that the roller I'I will drop in thediametrically opposite depression in the casing, when the casing andeccentricV have made-a half revolution, and the power operatedVdischarge opened or closed, as the case may be. As also may be seen inFig. 1,1 have shown small spring I6 that is attached to the arm I6',which normally holds the arm I6 inwardly, and, of course, the rod Einwardly, so that the roller I1 will normally rest in one of thedepressions in the casing I8. It will also be understood that, ifdesired, rather than using a spring, the arm I6 and its variousconnections might be so positioned that the weightof the arms, or, inother words, the center of gravity might be such that the roller I1'would normally fall Within one'of the cavities in the cut-out portion ofthe casing I8", and thus do away with the spring.

Resetting means for power discharge control` Now to provide means forthe positioning of rthe roller 23, so that the roller andi the dischargerlever will be depressedrif` the planetary is closed Vtion the rollerhappensA to be in, which, ofV course,

is dependent upon whether the planetary'discharge is open or closed.This saddle-shaped member 'I0 is pivotally bolted to the arm I4', as atl2, and slottedly mounted as at 13, there being shown a small pin 14,which will extendv through Vthe opposite ears of the member and through,an opening provided in the registering ear 'I5 of the extension I4.f

This form ofV connection shown allows for a slight vertical adjustmentof the member "I0 with regard to the extension arm I4. There is alsoshown an adjusting screw 'I6 at the outer end of the extension I4 foradjusting and holding the member in its adjusted position. v v

' As may be seen in Fig. 7, there is a small Arib .18 formed in thecross head 'II' of the saddle member '10, so that the bell crank, aboutto be mentioned, may rest on this rib vented from sagging.`

and thus be pre- It will be noticed that by providing a pivotal saddlemember 10 mounted on the extension arm I4 and the adjusting means 16,the roller 23 may be slightly adjusted with relation to the strikingnoses of the cams I3 and 21, heretofore mentioned.

Now mounted on `the lug 8D is -the bellcrank` lever I5, which has theone arm 8l bifurcated at its end as at 82 to form the forked ends tointurn straddle the aforementioned roller 23, while the other arm 84of thelever I5 is pinned tothe clevis 85 on the end of the rod F.' This'rod(see Fig. 1) is connected to the small stem 22, which is mounted on thestub shaft 22', supported in the bracket 22". v l Also extending fromthis sleeve 22 is` theintegral forked arm 2l, which straddles 'theeccentric rod 2B, which, it will lbe remembered-isa part of theplanetary discharge mechanism.V

Now there is mounted on this eccentric rod 20 the collars 2U', one ofwhich is located above the forked arm 2|, and one Aof which ispositioned below this arm.

1n Fig. 3 in the dotted lines, I have shown the arm 2| in its raisedposition and also 4the position the rod F will occupy when theb'ell'crank I5 is in its shifted or dotted line position shown in Fig.8. `'It will be remembered that the rod F is` connected to the bellcrank lever vIii heretofore mentioned, which in turn shifts the roller23 in its cross head 1|, so that itwill be positioned either in the pathof the opening cam I3 or the path of the closing cam 21.

Operation of the automatic opening and closing of the planetary powerdischarge Now assume that the planetary discharge (chute) is closed asshown inFig. 3. The eccentric rod 20 will be in its lowermost position,and the forked arm 2I will be just below and adjacent the upper strikingcollar ZIV. l

Also assume that the opening `cam I3 is ina position as shown inFig.. 1. Then on the starting of the automatic timing mechanism, ashere.- tofore explained, by the moving of theskip hoist control leverand its arm 1 and 'starting pawl 8, as soon as the opening 'cam I3strikes against the roller 23, which is in its full line position, asshown in 8, it will move vthe extension arm Il* downwardly and throughthe arm I6,` and the arm E will withdraw the roller `I1 from itsdepression I8" in the casing I 8', while the planetary driving mechanism(not shown) will cause the eccentric to move upwardly and the eccentricrod 20, of course, as shown in Fig. 1, tothrow the chute toits `openposition.

The eccentric rod 20 from the chute, in risingV will cause the lowercollar to carry the arm` 2I upwardly to the full line position shown inFig. 1, and dotted line position as shown in Fig. 3. The arm 2l inmoving upwardly has pulled on the rod F and on the bell crank leverI5,and shifted the same tothe dotted line positionshown in Fig. 8, thedischarge chute now being open. I

As the ratchet 9 continues in its forward stepby-step movement, it movesthe closing cam 21, landafter theclosing cam has traveled down to apoint just above the roller 23, a timed interval of seven, nine orelevent seconds has intervened, all of which time, it will beremembered, the dis.- charge chute is open. 1 f

Now the roller being in the dotted .line` position shown in Fig. 8,1Willbe struck bythe closing cam 21. This performsV two functions. It forcesthe extension arm I4' downwardly, which in turn through thearm I6 and..`the rod E will again release the cam roller I1"` from the planetarydischarge casing I8" and allow the planetary mec'n- 1i anism to revolveto theposition as'shown'in Fig. 3 to .thus close the chute.

'.Also, nthe eccentric rod 20 in lowering has caused the upper collar 20to strike .the arm 2l, as shownin Fig, 3, and moved the same from thedotted lineposition to the full line position, which in turn moves thearm F upwardly to thus shift the .bell crank lever I5 fromits' dottedline posii tion tothe `full line' position, as shown .in Fig. B, or,inbther words, reset the roller 23, which will now be in a position toagain be struck by :the peni'ng cam. I3, "when the next automatic cycleis started. Thus it 'will .be seen that should the planetary dischargechute happen to be open when `the automatic cycle. is started by theoperation of the skip control Vlevers I or 3, thev eccentric being in aposition as shown in Fig. 1the cam I3 will not strike the roller 23,because the roller will be over in its 'dotted line position, and thedischarge chute will have already been opened. V

i However, assoon as the closing cam 21 cornes over the roller 23, itwill contact with the same and force the arm III"` downwardly, which` inturn allows the planetary mechanism' to operate, and at the same timewill operate the bell crank lever to re-position the roller to be struckby the opening or the discharge cam` I3, when the skip control lever isragain operatedto elevate the skip and again start the automatic cycle inoperation.

Automatic, water control of the skip hoist control lever fto elevate theskip, the automatic timing mechanism is thrown into operation to startthe opening and closing of the discharge chute, and Aforproviding atimed interval between these operations, `the timing mechanism-for thecontrol of the water` will be setforth. Referring for` the moment toFigs. 14, 15 and 16,- there is shown a water tank with itsr operatingand control mechanism, which tank is fully described andillustrated inthe co-pe'nding application ledby me on the l'lthday of May, 1930, andbearing SerialNumber 453,282.

`In the' present application, therefore, onlyj'so much of the tankanditsvalves and operating `mechanism Visshown as is necessary to explain99 that Vextends to one arm ofthe bell Vcrank lever IDI), while' to theother arm of this bell crank is the connecting rod I III, which in turnis connected to the lowerr end4 ofthe water control lever 26 heretoforementioned. Y c y y There is also aspring. 9.9 that is connected tothezfree end of therod 99 to normallypull the rodi99 towards the tank,and to hold Vthe valves in the position shownin Fig. 14, In Fig. 15 thesupply or replenishing valve 92 is shown. in its closed position.

As aforementioned, the above tank is fullyexplained in theco-pendingapplication, and only a word or two of its operation is thoughtnecessary the present case, to understand that when the replenishingvalve 92 is open, the water from its source` will flow into the tank 80.Also the discharge valve BI is always closed when the replenishing valve92 is open, because this tank is to provide a measured amountof water tobelet into the drum (not shown). Finally, when the discharge valve SI isopen, the replenishing valve '92 is closed, so that there is nopossibility of a greater amount of water beingsupplied to the y drumthan desired.V I

. Referring now for the moment to Fig. 10, it will be seen if the lever2S is pulled outwardly at its upper end, the rod I I will be forcedinwardly to in turn, through the bell crank, pull the rod 99 outwardlyto thus force the rod 96 downwardly to close the replenishing valve andopen the discharge valve from the tank so that the 'water will be fedfrom the tank into the drum (not'shown). i Now it is desirable. to havethis water automatically turned on during the elevation of the skip orwhen the. skip nears itsupper limit of travel, because at that time theaggregates, of course, will be fed into the drum.

Referring to this automatic timing mechanism for the water, and for themoment to Figs. l, 2, 10, 11, 12 and 13 inclusively, there will be seenmounted on the timing shaftB the cam plates 24, which are normallypositioned as shown in 'l Fig. 10.'

These plates are adjustable on the shaft B so that the water supplyl maybe started in proper timed relation with the elevation of the skip andmaybe adjusted to cutin or cut off the water supply at the desiredinterval.

As heretofore mentioned, the Water supply rod IDI is actuated Aby thelever 26, lwhich is also mounted on the shaft b and carries in its lowerend the small roller 25, 'which' is tobe operate by the cam plates justmentioned. In Fig.V 10, the cam plates are shown as adjusted andpositioned, soV that the water replenishing valve 92 is. open and thedischargevalve 9| is closed, the camroller being atrwhat I term itsdrop-off position. l

Now when the timing shaft B is revolvedin a step-by-step movement, theroller 25 will ride alongthe face 24 of the cam plates and will forcethe lower endof the lever Zinwardly to in turn operate the rod IUI, andin so doing it will also move the rod 99 and the rod 96 to shut off thereplenishing valve and open the discharge valve. This dischargevalvemwill beheld open during the revolution ofthe cam plates until thecam plate reaches the drop-off point 24",

`-which will in turn allow the spring 99 to pull the rod 99'forward1yand the rod 96 `downwardly to thus again .open the replenishing valve tothe tank and clo'se the discharge valve to the drum. Y l Y It will beunderstood that while the cam face 24' is riding along thel face of theroller 25,

' the skip (not shown) will have .been-elevating being fed to the drum,which isrthebest jtime, as found by actual practice. s 1 i .1 j

It will also be understood'th'at during lthiscycle of the cam plates,the tank 9i) hasdischarged its contents `into the drum of the mixer,`and no .i

more water can be supplied to the mixture in .the drum until thedischarge valve isagain open.V Thus, it will-be seen that when theautomatic control mechanism is used, not only will the planetary-powerdischarge be controlled, but also the automatic supplyingoi^ the waterto and fromv theftank. Y Furthermore, if the operator should, for anyreason, desire to manually control the ilowV of water, it may be-done bythe simple manipulation of the water control lever 26. v

yIn Fig. 1, there is shown the rod H, which is designed to extend to abatchmeter (not shown), this-rod H being provided with a latch H toengagea roller H on rthe lever I4, which lever I4, it will Yberemembered, is the manuallyoperated leverforcontrolling-the planetarydischarge. will be understood that this discharge lever will be heldlocked by the batchmeter until the time set for the mixing has beencompleted, at which time therod I-I'will be shifted, unlocking the Ihave not shown the batchmeter butit discharge lever I-I and allowing forits manual or t automatic control, as above outlined.

' Now, although I have explained the construction and arrangement andoperation ofl therva'- rious parts as the specification has proceeded, Iwill again set out briey, in the form of a rsum, a cycle of the completeoperations.

Rsum of operation Assuming that the skip isA in its lowered position,and it isl desired to raise the same to empty the aggregates into themixing drum (not shown). The operator will hook the small handle I intothe notched member N, which in turn through the oscillating shaftb-willcause the skip hoist control rod 5 to be elevated, which in turnRemembering also that thebell crank-lever I5l is in its full lineposition, as shown in Fig. 8, then as the timing shaft B iirst moves,,the opening cam I3 will be directly over the roller V23. ,Y

New when the opening cam I Bstrikes the roller 23,1it will force thedischarge extensionarm I4 of the discharge lever Iidownwardly This,through the connecting arm AI6 and the rod E, will have pulled theroller Il from its depression, and allow the casing I8 to have made aone-half revolution and to Apull the eccentric of the planetarydischarge upwardly from the position shown inFig. 3 to the positionshownin Figql, thus opening the discharge chute.

'I'he eccentric rod 2l)Y in `rising also will have lifted the arm 2|upwardly to operate the bell crank lever I5 mounted on the armY I4 tothus shift the roller 23 to itsdotted line position, as shown in Fig. 8,to thus be 'within the pathoi the approaching closing cam 2l. 'Y

` Now vwe have the timing mechanism in operationpand the skipelevating.. Y

` operation.

I i theiforegoing, it willbe seen that I have After anfinterval of sevenor nine seconds, depending on how -the closing cam 1'21 -is set, `theclosing cam will contact with the roller `23 to again lowerthe extensionarm I4 to thus again operate the rod E-to withdraw the-roller from itsde# pressionin the casing in the planetary, and as soon as this occurs,the casing I8 will again make a one-half revolution, forcing `theeccentricv and its rod 20 downwardly tothus close the discharge chute. ll

l-When the discharge chute is closing,-the arm 2| will again beloweredto thus operate thelbell crank lever I to return the roller fromits dotted line position `in Fig. 8 to its full-lineposition, so

that this roller willnow be in a position-for being struck on the nextcycle by the opening cam i3. At the Sametime, the batchmeter will lockthe discharge handle for the desired timed interval.

As the timing shaft B has revolved, it has also carried the cam plates24 in their clockwise direction, and will have forced the'lower end ofthe lever 2S inwardly which, in turn, will cut oi the replenishing valveto the tank and will have opened the tank discharge valve, sothatthetank may empty into the drum of the mixer to furnish the propersupply of water forl the aggregates within the drum. i

Justbefore thetiming shaft Vhas made a complete revolution, the roller25 on the control lever 26 will come" to the drop-off point of the watercontrol cam plates 24, andthe spring will operate the rod 99 to againopen the 'replenishing for the tank and cut off the supply `from thetank to the drum, thus completing a cycle of the automatic 7The skipwill again be lowered or mayhave been lowered,and the next cycle may beagain performed in the same manner.

Now, should it happen that the dischargechute was open on the ustartofthe automatic cycleof operation, the eccentric' of the planetarydischarge mechanism will be in its raisedY position, l

as shown in Fig. 1, and in this instance the roller 23 would be in thedotted line position, as shown I intliig.` 8, but as soon as the closingcam 21 has l through the same cycle ashad the discharge chute beenclosed, the only` difference being that'the discharge chute will remainopen until the closingcam 21 contacts withthe roller 23.

Thus it will be seen that the opening and closing of the planetarydischarge is wholly auto matic with the starting of the skip hoist inoperation and, likewise, the supplying of the water into the ldrum isproperly timed with-relation tothe aggregates being fed into the drum.

f It will also be seen that all of the controls may be manually'operatedas in the past, by'simply pulling forwardly the lever 3|, and `notchingthe same within the shield 3|', which simply disengages the starter pawlfrom its ratchet 9, which will allow the driving pawl l0 to simply slipforwardly and rearwardly on the blank space 9 formed on the periphery ofthe ratchet wheel.

However, to throw into operation the automatic control mechanism, itwill again only be necessary to shift the lever 3l so that it mayassume'the position shown in Fig. 4, and on an operation of the smallhandle l, againthe automaticmechanism -will functinand the desiredautomatic cycle continue. i w *i i theiwell-known'form of Foote paver,so that it' is only necessary for the operator to control the skip hoistand, in turn, thetiming mechanism will function to thus control theopening and closing of the discharge trolfof thewater. i

The mechanismabove-described has given ex-` cellent service in actualuse, and greatly reduces the labor ofthe operator. Also, the element ofthroughtlessness or neglect for the opening and closing of `thedischarge or the forgetting to 'supplythe water at the proper times isdone away with. i A I A "Finally, it will be seen thatl the automatictiming mechanism is started coincident with the operating of the-mechanism that controls the initialfstart of the skip hoist, which isthe most desirabley time forthe proper handling and mixing of concrete.i i Having thus described my invention, what I- claim as new and desireto secure by Letters Patentis: i .i i i 1. An automatic discharge andwater control for concrete pavers, including a skip hoist `controllever,.an oscillatableshaft, and means forV temporarilyqlocking Vsaidcontrol levertoV the said oscillatable shaft, a timing shaft providedwith aratchet thereon, a pawl carried bythe said oscillatableshaft, ablank space on said ratchet and the pawl normally `resting on said andthe automatic con` eci blank space, a skip hoist rod connected to said2. A ratchet timing mechanism for'controlling i the discharge'r of aconcrete paver, including an oscillatable shaft, a rotatable timingshaft with opening and closing cams, a ratchetwheel on said shaftprovided with one blank space on its periphery, a driving pawl on said ioscillatable shaft .normally resting-,on `said blank space,ran armhaving a starter pawl` thereon, a skip hoist control lever looselymounted on said oscillatable shaft and means for temporarily locking thesame to said oscillatable shaft, and the arm indirectly connected tosaid hoist control lever,` whereby a movement of said leverv willadvance the ratchet into cooperation with the driving i pawl to therebydrive the ratchet wheel and rocontrol `rod will move adriving tooth intoen-` gagement with the ratchet wheel to thereby move `the rotatableshaftl throughl one; complete revolution,I opening and closing cams forthe water control Vand power discharge on said r'o`' tatable shaft; andVmeans for preventing the for- I ward slip `of said ratchet wheel andmeans for preventingV the backward slip of. said ratchet `wheel.

4; An automatic discharge andwater Vcontrol for'concrete pavers,including a timing mechanism,` opening and Vclosing cams for thedischarge included in said mechanism, together with an opening andclosing cam for the water discharge, said timing mechanismnormally-idle, a skip hoist control lever, and aV starter mechanismcooperating with said lever to throw said timing mechanism intooperative position, means for revolving the timing mechanism in astepby-step movement for' one revolution, means for preventing forwardslip of said timing-mechanism andmeans for preventing rearward slip ofsaid timing mechanism.

5. An automatic Adischarge and water control forY concrete pavers,including a timing shaft, having a ratchet wheel thereon, a skip hoistcontrol lever, a starter mechanism connected with said lever, saidratchet wheel being normally-inoperative, and an initial movement of thecontrol lever causing said starter mechanism to throw the ratchet wheelinto an operative position,

means for ratcheting said wheel through a com-` plete revolution, aseries of depressions about the perimeter of saidV ratchet wheel,spring-pressed meansto engage said depressions to allow a forwardmovement of said ratchet wheel in a stepby-step movement, and preventany forward slip of said ratchet wheel, and further means to pre-` ventthe rearward slip of said ratchet wheel, and adjustable camsl onsaidtimingshaft adapted tol control the power discharge and the watersupply. f

6. An automatic discharge and water control for concrete pavers,including anY automatic tim-` ing mechanism, said timing mechanismincluding a shaft having a ratchet wheel thereon, a blank space on saidratchet wheel, an arm carrying a' starter pawl, engaging a tooth of saidratchet wheel, adriving pawl, normally resting on said blank space,means for manually raising said arm to thereby initially move theratchet wheel one tooth, means to continue the ratchet movement of saidwheelV through a complete revolution of said ratchet wheel, cams on saidtiming shaft adapted to control the opening and closing of thedischarge, and the control Vof the water, during a complete revolutionof the timing shaft, and means for disengaging the starter pawl from adriving tooth, to thereby render the automatic` cams on said shaftadapted to control the opening-and closing of theV discharge and thecontrol ofthe water supply, means for disengaging the vstarter pawl fromthe ratchet whe-el and for holdingl said pawl locked out of engagementfrom said ratchet wheel to thereby render the timing mechanisminoperative, yeventhough said starter arm be raised by a movementof'said hoist control lever. v A

v8. An automatic` discharge and Water control for concrete pavers,including aipower-operated discharge, a water supply tanklmanually-operated controls for the same, amanually-operatedskip hoistcontrol lever, automatic control means including a starter pawlconnected with saidlast mentioned control for automatically controllingthe power discharge andthe water supply from the tank, and means torender the starter pawl inoperative rendering the automatic meansinoperative, Y even though the manually-operated skip hoist controllever be actuated.

9. An automatic,power-operated discharge and waterr control for concretepavers, including a i power-operated discharge, a water supply for thepaver, `manual means for controlling .the poweroperated discharge. andthe water supply, a manually-operated skiphoist control lever, and meansfor also mechanically operating the same, an automatic timing mechanismincluding a starter pawl for controlling the manually-operated controlmeans for the power-operated discharge and water` supply, the automatictiming mechanism normally actuated by ,the initial movement of the skipVhoist control leveiyand means for rendering the starter pawlinoperative, to thus throw the comple-te timing mechanism also out ofcontrol.

10. A vconcrete paver provided'with a planetary power-operateddischarge, a manually-operated arm which,rwhen' depressed, will controlboth the opening and closing of said dischargarshiftable means carriedby said arm and connected to said power-operated discharge, anopeningcam for automatically depressing said shiftable means and saidarm to thereby control the opening of the discharge, a closing camfor'automatically depressing said shiftable means and said arm tothereby control the closing of said discharge, and the shifting meansproperly positioned by the opening and closing movement of the planetarydischarge to thus be respectively depressed by the saidopening andclosing cams. f

l1. A concretepaver provided with a planetary power-operated discharge,an arm which, when depressed, will* control both the opening andVclosing of said discharge, a shiftable striking surface carried by saidarm and shiftably operatively connected to said power-operateddischarge, an opening cam for -automatically depressing said shiftablestriking surface and said arm to thereby control the opening of thedischarge, a closing cam for automatically depressing said shiftablestriking surface and said arm to thereby control the closing of saiddischarge, and the shiftable striking surface automatically receptivelypositioned by the opening and closing movement of the planetarydischarge. l

12. A concrete paver provided with a planetary power-operated discharge,a lever having an eX- tension arm thereon, controls extending*v fromsaid lever to said power-operated discharge to control the opening andclosing of said discharge, a pivotal member carried by said arm, a bell`crank' on said member, a striking surface shifted by said bell cranklever, control rods extending from the planetary discharge to said bellcrank, an opening cam for striking the shiftable surface when it is inone position, and a closing cam for striking'the shiftable surface whenit is in the other position, `to thereby move said arm and lever to inturn control the opening and closing of the power discharge, the openingand closing movement of thepower discharge operating said bell crank tothereby respectively locate the position of Athe shiftable strikingsurface for the striking action of said cams.

13. A concrete paver provided with a poweroperated discharge, a leverhaving an extension arm thereon, controls extending from said lever tosaid power-operated discharge, whereby a novement of the lever and armwill control the opening and closing of said discharge, a bell `crankcarried by said arm and a roller on said arm and shifted by the movementof said bell crank, control rods extending from the said planetarydischarge to said bell crank, a revolvable opening cam for striking theroller when in one position to depress said arm to thereby open thedischarge, and a closing cam for striking the roller when in its shiftedposition, to again depress said arm to thereby close the power dischargeand the opening and the closing of the discharge operating said bellcrank, to thereby properly shift the roller to set the same in itsreceptive positions to be respectivelystruck by said cams.

14. A concrete paver provided with a poweroperated discharge, saiddischarge including an eccentric having striking collars thereon, an armto be operated by said respective collars, a bell crank operated throughthe movement of said arm, a shiftable roller operated by said bellcrank, a lever having an extension arm thereon, carrying said bell crankand roller and connected with the power-operated discharge, whereby amovement of said lever and extension arm will open and close saiddischarge, a cam for striking the roller when in one position to operatesaid lever to open the discharge, and an adjustable cam to strike theroller when in its other position to close the power-operated discharge,and the shiftable roller set and reset by the upward and downwardmovement of the eccentric of the power discharge.

15. An automatic control for concrete payers, including a planetarydischarge, a shiftable roller which, when depressed, controls the powerdischarge, revolvable cams for striking the shiftable roller to controlthe opening and closing of the said power discharge, and means operatedby the opening and closing movement of the power-operated discharge forproperly positioning the shiftable means so as to be struck by therespective opening and closing cams.

16. An automatic control'for concrete pavers, including a planetarydischarge, a shiftable roller, which, when depressed, controls theplanetary discharge, revolvable cams for striking the shiftable rollerto control the opening and closing of the said power discharge, theshiftable roller being in its normal position when the discharge isclosed and to be operated on by the opening cam, and in its shiftedposition when the discharge is open and to be operated on by the closingcam,

and themovement of the planetary discharge setting and resetting theshiftable roller.

17. An automatic discharge and water control for concrete pavers,including a power-operated discharge and a water supply, a dischargecontrol lever and a shiftable roller thereon, a revolvable opening andclosing cam for striking the shiftable roller to control the opening andclosing of the said power operated discharge, the shiftable roller beingin its normal position when the discharge is closed, and to be operatedon by the opening cam, and in its shifted position when the discharge isopen and to be operated on by the closing cam, the movement of thepower-operated discharge setting and resetting the shiftable roller, anda further cam for turning on the water supply after the power-operateddischarge is closed.

18. An automatic discharge and water control for concrete pavers,including a power-operated discharge and water supply, a dischargecontrol member, a shiiitable roller on said member, revolvable openingand closing cams for respectively depressing the shiftable roller andmember to control the opening and closing of the said poweroperateddischarge, the shiftable roller being set and reset by the opening andclosing movement of the power-operated discharge, a further cam forturning on the water supply after the poweroperated discharge is closedand for turning off the water before the power-operated discharge isopened, and means for turning all of said cams through one completerevolution,

19. A concrete paver, including a discharge chute, an eccentricconnected to -said chute for operating the same, rods for controllingthe movement of the eccentric, a shiftable roller cooperating with saidrods, and timing means including cams for depressing said roller toregulate the opening and closing of the discharge chute, and meansoperated by the movement of the eccentric to set and reset the roller inits proper position to be depressed by the movement of said cams.

20. An automatic discharge and water control for concrete pavers,including a manual and automatic control lever for controlling the powerdischarge, a manual and automatic control lever for controlling thewater supply, a skip hoist control lever operably connected with the twoformer-mentioned levers, whereby an initial movement of the hoistcontrol lever will automatically control the two former-mentionedlevers, means including a starter paWl also connected with the skiphoist control lever capable of rendering the automatic mechanisminoperative, whereby the power-operated discharge and the water controlsmust be manually controlled.

GEORGE E. BLOOD.

